The sobering fact is heart disease accounts for the majority of deaths among older Boston terriers. This is commonly due to a genetic predisposition toward valve deterioration and can be often be heard as a heart murmur during your dog's annual exam.
Diarrhea usually is a sign that something is bothering the dogâs gastrointestinal tract. Some cases of diarrhea are caused by minor digestive distractions, such as when dogs eat people food or get into the garbage. Diarrhea can also be caused by more serious problems, like poisoning or systemic disease. Diarrhea can come on quickly, be severe and then go away. It also can happen gradually and last for a long time. Affected dogs often are nauseous and have intestinal cramping and pain.
If your dog has a watery stool, this can be attributed to food intolerance or his diet, or a more serious condition such as a tumor in the gastrointestinal tract. A sudden change in the dog's diet may also lead to diarrhea and vomiting.